1. Aczél, J., Einige aus Funktionalgleichungen zweier Veränderlichen ableitbare Differentialgeichungen. Acta Sci. Math. (Szeged) 13 (1949), 179–189.
2. Aczél, J., Remarks on a problem of Gy. Targonski. Report of the 27th ISFE, Poland 1989. Aequationes Math. 39 (1990), 314–315.
3. Aczél, J., and Gronau, D., Some differential equations related to iteration theory. Canad. J. Math. 40 (1988), 695–717.
4. Aczél, J. and Gronau, D., Iteration, translation, commuting and differential equations. In: Gronau, D. and L. Reich (eds), Selected topics in functional equations. [Grazer Math. Bericht Nr. 295], Math.Stat. Sekt. Forschungsges. Joanneum, Graz, 1988.
5. Agnes, C. and Raserri, M., Complexity, undecidability and chaos: a class of dynamical systems with fractal orbits. In: Livi et al. (eds), Workshop on chaos and complexity, Torino, Oct. 5–11, 1987. World Scientific, Singapore, 1988, pp. 3–25.